Very, very interesting premise! I also enjoy the emphasis on dialogue at what must be the opening of the episode, to help lay the groundwork for the mayhem that must inevitably ensue.

Please give us at least one more chapter, to let us know which "friends" Xander will be calling. Personally, I think Ghostwheel would have a ball with the conflict, and Uncle Gerard might offer some interesting challenges to the First.

Not Uncle Cain, if you please, if for no other reason than it would give Buffy (and Spike) a few too many ideas...